[PATCH 1/2] sst: report correct jack event

[PATCH 1/2] sst: report correct jack event

[Alan Cox]

From: Lu Guanqun <guanqun.lu@intel.com>

The status of jack event is compared bitwise:

[in sound/core/jack.c:snd_jack_report()]
	for (i = 0; i < ARRAY_SIZE(jack_switch_types); i++) {
		int testbit = 1 << i;
		if (jack->type & testbit)
			input_report_switch(jack->input_dev,
					    jack_switch_types[i],
					    status & testbit);
	}

So in order to report the correct events, 3 should be passed instead of 1.

Signed-off-by: Lu Guanqun <guanqun.lu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
---

 drivers/staging/intel_sst/intelmid_v2_control.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


diff --git a/drivers/staging/intel_sst/intelmid_v2_control.c b/drivers/staging/intel_sst/intelmid_v2_control.c
index 000378a..46ab55e 100644
--- a/drivers/staging/intel_sst/intelmid_v2_control.c
+++ b/drivers/staging/intel_sst/intelmid_v2_control.c
@@ -1090,7 +1090,7 @@ static void nc_pmic_irq_cb(void *cb_data, u8 intsts)
 	if (intsts & 0x1) {
 		pr_debug("SST DBG:MAD headset detected\n");
 		/* send headset detect/undetect */
-		present = (value == 0x1) ? 1 : 0;
+		present = (value == 0x1) ? 3 : 0;
 		jack_event_flag = 1;
 		mjack->jack.type = SND_JACK_HEADSET;
 		hp_automute(SND_JACK_HEADSET, present);

[PATCH 2/2] sst: avoid unnecessary firmware reloading for MRST

[Alan Cox]

From: Feng Tang <feng.tang@intel.com>

SST HW on MRST doesn't need to reload the firmware during suspend/resume
cycle, so remove the extra workload. This also fix a bug that the firmware
sample rate can't be modified when there is no active playback/capture
stream.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
---

 drivers/staging/intel_sst/intel_sst.c              |    5 ++++-
 drivers/staging/intel_sst/intel_sst_common.h       |    2 ++
 .../staging/intel_sst/intel_sst_drv_interface.c    |   10 ++++++++++
 3 files changed, 16 insertions(+), 1 deletions(-)


diff --git a/drivers/staging/intel_sst/intel_sst.c b/drivers/staging/intel_sst/intel_sst.c
index c0c144a..d892861 100644
--- a/drivers/staging/intel_sst/intel_sst.c
+++ b/drivers/staging/intel_sst/intel_sst.c
@@ -545,7 +545,10 @@ static int intel_sst_runtime_suspend(struct device *dev)
 	/* Move the SST state to Suspended */
 	mutex_lock(&sst_drv_ctx->sst_lock);
 	sst_drv_ctx->sst_state = SST_SUSPENDED;
-	sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full);
+
+	/* Only needed by Medfield */
+	if (sst_drv_ctx->pci_id != SST_MRST_PCI_ID)
+		sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full);
 	mutex_unlock(&sst_drv_ctx->sst_lock);
 	return 0;
 }
diff --git a/drivers/staging/intel_sst/intel_sst_common.h b/drivers/staging/intel_sst/intel_sst_common.h
index f8e9da6..870981b 100644
--- a/drivers/staging/intel_sst/intel_sst_common.h
+++ b/drivers/staging/intel_sst/intel_sst_common.h
@@ -420,6 +420,8 @@ struct intel_sst_drv {
 	unsigned int		max_streams;
 	unsigned int		*fw_cntx;
 	unsigned int		fw_cntx_size;
+
+	unsigned int		fw_downloaded;
 };
 
 extern struct intel_sst_drv *sst_drv_ctx;
diff --git a/drivers/staging/intel_sst/intel_sst_drv_interface.c b/drivers/staging/intel_sst/intel_sst_drv_interface.c
index 1021477..69daa14 100644
--- a/drivers/staging/intel_sst/intel_sst_drv_interface.c
+++ b/drivers/staging/intel_sst/intel_sst_drv_interface.c
@@ -53,6 +53,13 @@ int sst_download_fw(void)
 	if (sst_drv_ctx->sst_state != SST_UN_INIT)
 		return -EPERM;
 
+	/* Reload firmware is not needed for MRST */
+	if ( (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) && sst_drv_ctx->fw_downloaded) {
+		pr_debug("FW already downloaded, skip for MRST platform\n");
+		sst_drv_ctx->sst_state = SST_FW_RUNNING;
+		return 0;
+	}
+
 	snprintf(name, sizeof(name), "%s%04x%s", "fw_sst_",
 					sst_drv_ctx->pci_id, ".bin");
 
@@ -71,6 +78,9 @@ int sst_download_fw(void)
 	retval = sst_wait_timeout(sst_drv_ctx, &sst_drv_ctx->alloc_block[0]);
 	if (retval)
 		pr_err("fw download failed %d\n" , retval);
+	else
+		sst_drv_ctx->fw_downloaded = 1;
+
 end_restore:
 	release_firmware(fw_sst);
 	sst_drv_ctx->alloc_block[0].sst_id = BLOCK_UNINIT;